Best Derlin Zippers

VIPER Archery Sidewinder XL Compound Bow Sight -- Made in USA -- Machined Aluminum, Bright Single Pin, Toolless Quickset Gear-Drive Elevation & Micro-Tune Windage Adjustments, 0.010 Pin

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
INNOVATIVE QUICKSET ELEVATION ADJUSTMENT -- Dial the ultra-smooth gear-drive star knob to the yardage desired and shoot. No tools required..
WINDAGE & 2nd AXIS ADJUSTMENTS -- Micro-adjustable toolless windage and extremely smooth Derlin bushing 2nd axis adjustments..
SUPERIOR VISIBILITY -- 1 ultra-bright horizontal fiber optic metal pin. Choose one of three pin size models - 0.010, 0.015, 0.019..
VERSATILE 1.63-INCH SIGHT HOUSING -- threaded for optional lens kit, accepts most sight lights..

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
RAPIDSET ELEVATION ADJUSTMENT KNOB -- Adjust for elevation on the run with easy-turn toolless adjustment knob..
2nd AXIS ADJUSTMENT -- Simple and smooth Derlin bushing 2nd axis adjustment..
SUPERIOR VISIBILITY -- Single ultra-bright vertical fiber optic metal razor pin. Three pin size models available - 0.010, 0.015, 0.019..
VERSATILE 1.63-INCH SIGHT HOUSING & LIGHTWEIGHT -- threaded for optional lens kit, accepts most sight lights. Weighs only 9.2 ounces..

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
RAPIDSET ELEVATION ADJUSTMENT KNOB -- Adjust for elevation on the run with easy-turn toolless adjustment knob..
2nd & 3rd AXIS ADJUSTMENTS -- Simple and smooth Derlin bushing 2nd and 3rd axis adjustments..
SUPERIOR VISIBILITY -- Single ultra-bright vertical fiber optic metal razor pin. Three pin size models available - 0.010, 0.015, 0.019..
VERSATILE 1.63-INCH SIGHT HOUSING & LIGHTWEIGHT -- threaded for optional lens kit, accepts most sight lights. Weighs only 12.1 ounces..

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
RAPIDSET ELEVATION ADJUSTMENT KNOB -- Adjust for elevation on the run with easy-turn toolless adjustment knob..
2nd & 3rd AXIS ADJUSTMENTS -- Simple and smooth Derlin bushing 2nd and 3rd axis adjustments..
SUPERIOR VISIBILITY -- Single ultra-bright vertical fiber optic metal razor pin. Three pin size models available - 0.010, 0.015, 0.019..
VERSATILE 1.63-INCH SIGHT HOUSING & LIGHTWEIGHT -- threaded for optional lens kit, accepts most sight lights. Weighs only 12.3 ounces..

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
SIMPLE ELEVATION & PIN ADJUSTMENT SCREWS -- Features easy-adjust elevation and pin screws..
2nd & 3rd AXIS ADJUSTMENT -- Simple and smooth Derlin bushing 2nd & 3rd axis adjustments..
SUPERIOR VISIBILITY -- 5 ultra-bright horizontal fiber optic metal razor pins. Choose one of three pin size models - 0.010, 0.015, 0.019..
VERSATILE 1.82-INCH SIGHT HOUSING -- threaded for optional lens kit, accepts most sight lights, and comes with three interchangable colored sight housing rings. Weight weighs only 5.5 ounces..

Set of 12 cylindrical bars in a variety of materials for identification exercises and exploration of density, mass and volume. Materials included: Hardwood, Softwood, Aluminum, Copper, Brass, Rubber, Nylon, Derlin, PVC, Glass, Acrylic & Teflon. Each cylinder is the same diameter, 0.5" (12.5mm) but each has a different length. Set includes a wooden storage block.
Excellent for physics classrooms. This set allows learners to explore the relationship between density & mass, and how the density of a substance is constant, even as its mass and volume change.
Set includes a complete manual that describes the basics of density, mass and volume, and instructions for making calculations.
Designed to be used in an educational setting and are not fabricated using ultra high precision machining. Expect tolerances in the +/- 5% range of any stated dimensions (although they are generally much tighter)..
The Eisco Labs Density Investigation series is intended to help learners become familiar with the appearance, texture, hardness and density of a variety of common substances, explore volume, density & mass and provide them with quality introductory physics and chemistry concepts.

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
TOOLLESS ELEVATION & WINDAGE ADJUSTMENTS -- Adjust for elevation and windage on the run with toolless micro adjustment knobs.
2nd & 3rd AXIS ADJUSTMENT -- Simple and smooth Derlin bushing 2nd & 3rd axis adjustments..
SUPERIOR VISIBILITY -- 5 ultra-bright horizontal fiber optic metal razor pins. Choose one of three pin size models - 0.010, 0.015, 0.019..
VERSATILE 1.82-INCH SIGHT HOUSING -- threaded for optional lens kit, accepts most sight lights, and comes with three interchangable colored sight housing rings. Sight weighs only 10.8 ounces..

MADE IN AMERICA QUALITY -- CNC machined, extremely tough, 6061 T6 top-grade aluminum construction. All stainless-steel hardware..
TOOLLESS ELEVATION & WINDAGE ADJUSTMENTS -- Adjust for elevation and windage on the run with toolless micro adjustment knobs.
2nd & 3rd AXIS ADJUSTMENT -- Simple and smooth Derlin bushing 2nd & 3rd axis adjustments..
SUPERIOR VISIBILITY -- 5 ultra-bright horizontal fiber optic metal razor pins. Choose one of three pin size models - 0.010, 0.015, 0.019..
VERSATILE 1.82-INCH SIGHT HOUSING -- threaded for optional lens kit, accepts most sight lights, and comes with three interchangable colored sight housing rings. Sight weighs only 10.8 ounces..

REPAIR MOST ZIPPERS EASILY: apparel, backpacks, tents, boats, marine, sleeping bags, purses, jacket, pants, bag, luggage, wetsuits, and more. Works on open-end, closed-end, invisible, and watertight zippers..
NO TOOLS OR SEWING REQUIRED: Fix zip isn’t your average zipper repair kit. It’s a replacement zipper slider that you can install without tools or sewing. Anyone can do it! You'll have your zipper handle in best condition in no time!.
DURABLE, QUALITY BUILD: Stop replacing your zippers over and over! These top-quality black nickel replacement zippers are made strong, so they won't need to be replaced again. When someone pulls on the....