uxcell 10pcs Set Screw Collars 2.05mm Bore Shaft Collars, 7mm OD, 5mm Width, Landing Gear Stopper Wheel Collar electronics3 The barrels are compatible with

The barrels are compatible with all 2BA sized corkscrew thread dart points

powder-free

8 colors for your choice（ Pink / Blue / Red / Black / Orange / Green / Yellow / Silver） S/M 2 size for toddler

If it's being drilled

large and extra large sizes

uxcell 10pcs Set Screw Collars 2.05mm Bore Shaft Collars, 7mm OD, 5mm Width, Landing Gear Stopper Wheel Collar electronics3 The barrels are compatible withuxcell 10pcs Set Screw Collars 2. 05mm Bore Shaft Collars, 7mm OD, 5mm Width, Landing Gear Stopper Wheel Collar Durable Construction: Made of nickel plated carbon steel, high strength, strong locking force, anti corrosion, and durability. Round bore collars are commonly used as positioners, spacers, stops, and bearing surfaces. Secure Shaft Attachment: Set screw collars are designed with a threaded hole and a set screw that tightens against the shaft,