Drive Shaft Spacer Type 1 & 2 for Lower Left Shaft 5m Belt Sprocket. Fits Raser, THS, SCOOTR, Tiger, R3, Star II, Rockville, Salorr, THX PRO & Libra, Cobra, the rock, lowrider rock, STANDR,Cobra commuter, rockette, dynamite III, and nuke scooters with This spacer goes between lower left side pulley and left side drive shaft bearing to keep bearing from damaging shaft. This is an improved spacer that is made in usa. Specs:ID-480/1000ths, OD-750/1000ths, 720 thousandths long