... noise, high efficiency NOVO's timing pulley:1. Plain bore: MXL, XL, L, H; T2.5, T5, T10; AT5, ... Phosphate, Zinc Plating, Hard anodized, Nitriding, Dichromate.5. Teeth Number is from 9 to 216.Specifications1. ... European market 2.Material:Plastic 3.Belt pulley, non-standard or standard ,OEM availableWhat we ... ).What we manufacture and where we sell:timing belt pulleys,locking assemblies,torque limiter, gear ...