Product Description The eight-piece chainring bolt set by absoluteBLACK for 4-arm cranks These chainring bolts are used to attach absoluteBLACK chainrings to 4-arm cranks. They have a receptacle for Torx T30 and are made of anodised aluminium. Specifications:Type:Chainring BoltsThreads:M8Drive:Torx T30Head shape:Raised HeadMaterial:aluminium (7075)Technical Information:Thread Length:8 mm (long), 6.5 mm (short)Torque max.:7 NmCompatibility:long: 110/4 BCD Oval Road chainrings (inner + outer)104 BCD Oval 26-/28-/32-T chainrings64 BCD Round 26-/28-/30-T chainringsround CX chainrings short: 104 BCD Oval 34-/36-T chainrings104 BCD Round 32-/34-/36-/38-T chainringsbash ringFeatures:CNC manufacturedanodisedrecommended tightening torque 5 - 7 Nmdesigned in Great Britain, manufactured in PolandNote from the manufacturer:It is essential to use a medium-strength threadlocker on the thread (e.g. Loctite 243). If you only change to an oval road chainring on the inside and keep using a round chainring on the outside, continue to use the original bolts. With the round CX chainrings, the nuts may have to be filed down to fit properly (depending on the crank). Manufacturer Numbers:long:BOLT4Lshort:BOLT4SContents:4 x absoluteBLACK chainring bolts4 x nuts 7 mm (long) or 4 x nuts 4 mm (short) Weight: black | short: 6.2 g Manufacturer: absoluteBLACK Ltd. Unit 6 88 Peterborough Rd. London SW6 3HH United Kingdom info@absoluteblack.cc Distributor: bc GmbH Carlo-Schmid-Straße 12 52146 Würselen Germany info@bike-components.de