OMPHOBBY M4 Helicopter Idler Pulley Set(Silver)OSHM4020S Sale! from 1038 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This is a replacement idler pully set for the OMPHOBBY M4 Helicopters Contents Idler Pulley -2Bearing Φ3xΦ6x2.5-4Bushing Φ3xΦ4x2-2socket cap screw M3x14-2Idler pully cone-2 Qty available:1 SKU:OSHM4020S