Hinged Spiral Nail Stop Collars (VE-52)
Hinged Spiral Nail Stop Collar is combining in two pieces and hinged at two-end. The width of these stop collars is 63mm. This collar can be used in both upset and non-upset casing to provide maximum clearance during rotation. Locking is by way of a groove in the middle into which a spiral nail is driven for improved grip on the casing.