These spring gate o-rings are essential for bag making; the spring gate allows for easy attachment and detachment of straps or accessories to loops or d-rings, while the o-ring provides a secure connection and prevents items from slipping off accidentally. This combination makes the spring gate o-ring a versatile and reliable piece of bag hardware. Interior – 1 1/4 in. Exterior – 1 1/2 in. Thickness – 1/8 in. Sold in packs of 2. **Simply Classic prohibits customers from selling on Amazon or to unauthorized third party sellers to resell on Amazon. Brewer customers who disregard this policy may have purchase orders cancelled or accounts terminated.**