Super light, very low profile, aluminum construction with Allen style head  'grub' locking screw. Reduce number of spacers, allows precision adjusting and positioning on all 3mm axles.

Outside- Diameter: 7mm, Width: 3.7mm + 0.2mm shoulder. Torque: 0.3NM

Very slim profile ideal for low axle to chassis clearance including BRM slot cars

PACKS OF 3 Locking collars with hardware

Axles, gears, spacers and any other items depicted are not included.