Name Dr. Pulley Roller Weights 21x17mm (x6) 15.5g Item No. SR2117155 Brand DR. Pulley Roller Size 21 x 17 mm Weight 15,5 gr
Dr.Pulley SR roller weights have become increasingly popular. Due to their slightly different shape one set is enough to improve acceleration and top speed equally.
6 roller weights - 21 x 17mm / 15.5g