Accu-Link&reg; Adjustable Link V-Belt, 4L or A Profile, 1/2" Width, 4ft Length Replacement for Power Twist Plus V-Belt, 1/2-Inch x 4-Foot Accu-Link detachable tab type link belting is the ideal substitute for conventional rubber V-belts. Make endless with a simple twist  no tools required! Polyester fabric is impregnated with a premium polyurethane compound that eliminates elongation and improves tensile strength for longer life. Jason/Megadynes exclusive manufacturing process makes Accu-Link the most precise belt of its type, for optimum sidewall fit with the pulley. Reduces vibration on drive for more precise end production. Perfect for lathes, table saws, bandsaws and other woodworking tools