Product Description Replacement Bolt Kit from Burgtec for MK3 Direct Mount stem. The bolts are made from steel and also compatible with MK2 Direct mount stem. Product Specifications: Material:Steel black | 20 mm: Thread length:20 mm Product Features: Durable steel construction for long-lasting strength and stability.Compatible with MK3 and MK2 Direct Mount stems.Thread length: 20 mm. Manufacturer Number: black | 20 mm: 3533 Contents: 6 x Burgtec Bolts for MK3 Direct Mount Stem Manufacturer: Burgtec Unit 8 Leekbrook Way Leek Staffordshire ST13 7AP United Kingdom info@burgtec.co.uk Distributor: bc GmbH Carlo-Schmid-Straße 12 52146 Würselen Germany info@bike-components.de