Silicon Carbide Grinding Wheel 3" X 1/2" X 1/2" Grit:Medium and the blade-tightening mechanism is

and the blade-tightening mechanism is much nicer than pressing a saw frame between my chest bone and bench while tightening a blade

and no springs

each 4" (100mm) in overall length

This jewelry-quality sterling silver wire is available in 12" lengths and 11 sizes ranging from 0

Silicon Carbide Grinding Wheel 3" X 1/2" X 1/2" Grit:Medium and the blade-tightening mechanism isThis silicon carbide grinding wheel measures 3" in diameter by 1 2" thick and features a 1 2" lead center designed for use with a standard tapered spindle. It is suited for grinding mild steel and soft metals, including copper, bronze, gold, and silver. The tapered spindle shown in product photography is sold separately and is depicted for scale and illustration purposes only. Maximum operating speed: 8,500 RPM. Always wear appropriate eye protection