Wolf Tooth designed these bolts to be the best on the market. These single chainring optimized bolts have a 4 mm hex socket on the bolt and a 6 mm hex socket on the nut so no spanner is needed. These are 6 mm long so they work perfectly with any bolt on single chainring that does not have threaded standoffs. Compatibility -Any of our bolt-on Drop-Stop®chainrings with through holes -Works with other brands single chainrings as well

7075-T6 aluminum, Made in the USA. 4 bolts and nuts weigh only 8 grams, size M8 x.75 x 5. These are 6 mm long so they work perfectly with any bolt on single chainring that does not have threaded standoffs. These single chainring optimized bolts have a 4 mm hex socket on the bolt and a 6 mm hex socket on the nut so no spanner is needed. Precision Machined Chainring Bolts for Single-Ring Drivetrains.

Fastener Type: Bolt, Hex. Brand: Wolf Tooth Components. Material: Aluminum. Color: Black. Size: 6MM/4 Piece. Date First Available: July 11, 2014. Best Sellers Rank: #81,535 in Sports & Outdoors. Customer Reviews: 4.6 out of 5 stars 197 ratings 4.6 out of 5 stars. : B00LP85JTI. Sport Type: ?Cycling. Size: ?6MM/4 Piece. Outer Material: ?Aluminum. Part Number: ?4CBCN06BLK. Manufacturer: ?Wolf Tooth Components. Number of Items: ?4. Suggested Users: ?Unisex. Material: ?Aluminum. Color: ?Black. Country of Origin: ?United States. Brand Name: ?Wolf Tooth Components. Item Weight: ?0.02 Pounds. Package Weight: ?0.01 Kilograms. Item Package Dimensions L x W x H: ?4.88 x 2.36 x 0.43 inches.