1.Size: 20*8.6*5.5*6 mm 2.Size detail: Taper*ID*Valve tip diamete*Height 3.Material: 20Cr(AISI5120) 4.TS16949 We can provide GY6 Engine Valve Key in stock. And also we can manufacture according to your drawing and sample fit for European, American,Japanese car,motorcycle,atv,truck. Welcome OEM inquiry.Jason Tel: 0086-576-82656068Mob: 0086-15214759178Skype: jason_1123 Engine Valve Key