3-Finger Vinyl-Coated Extension Clamp on Stainless Steel Rod, 3.4" Max Material_Acrylic Two rectangular slots accept square

Two rectangular slots accept square or round rods up to 16 mm in this aluminum alloy multipurpose clamp holder

and connecting leads mounted on 4mm-socketed bases for building circuits from 40-plus components

25 inches with vinyl-coated prongs on a 5

Wooden fulcrum-balance simple-machine model with a sliding pivot

the optical-grade body delivering cleaner refraction angles than acrylic peers for precision Snell's law work

3-Finger Vinyl-Coated Extension Clamp on Stainless Steel Rod, 3.4" Max Material_Acrylic Two rectangular slots accept squareVinyl coated three finger jaws hold apparatus up to 3. 4 inches without slipping, mounted on a 5. 5 inch stainless steel rod with thread fitted joints for smooth adjustment.