This is a bottle of 120,000 Weight Diff-Lock Silicone Oil by OFNA Racing. FEATURES: This silicone oil is used in gear differential, mainly used in off- road nitro buggies It"s used to slow and stop the differential action of the diff units, thus providing better output power to the drive train YOU WILL RECEIVE: One Bottle of Silicone Oil 120,000 SPECIFICATIONS: Weight: 120,000 Volume: N/A JAW 9/27/06 ir/jxs &