The Thomson seatpost collar is a must have if you already own a Thomson seatpost or stem. 100% USA made.

Thomson seatpost collars utilize a bolt, washer and barrel nut hardware design that allows float on both sides of the collar slot ensuring consistent clamping force. The bolt hole angle, height of the collar, and offset slot generate maximum clamping force at only 25-inch pounds of fastener torque. The collar is made from the same 7000 series alloy like the seatposts and stems providing superior strength and durability.

• Weight: from 25 grams.
  
• Diameters: 28.6, 29.8, 31.8 34.9 and 36.4 mm.
  
• Colors: black.