Best Compatibility: The Gy6 exhaust bolt and gasket can match with 50cc 125 cc 150cc Taotao Sunl Coolster Jonway Roketa Scooters ATVs Go Karts Moped Quad 4 Wheeler Dune Buggy. Size Details: Bolts size: approx. M6X32mm long. Nuts/Caps: approx. 30.5mm long. Exhaust gasket outer diameter size: approx. 30mm. Exhaust gasket inner diameter size: approx. 23.5mm. Thickness of exhaust gasket: approx. mm. Durable Material: The exhaust studs nuts are made from metal, which is sturdy and can last long time. The header was bent from the original owner. When installed on new skid plate, it can create a gap and an exhaust leak. Package Included: You will get 4pcs studs, 4pcs nuts and 2pcs gasket, 10 pcs in total. Product description Color:10PCS Item Name: 10 PCS Gy6 Exhaust Bolt and Gasket for 50cc 125 cc 150cc Scooters ATVs Go Karts Moped Quad 4 Wheeler Dune Buggy Sandrail Taotao Sunl Coolster Jonway Roketa (2 Sets)