Ruland shaft collars are carefully made from select bar stock sourced exclusively from North American mills and are machined to a fine burr-free finish. Hardware exceeds DIN 912 12.9 standards for maximum torqueing capabilities and holding power. Ruland, founded in 1937, manufactures all products in our Marlborough, MA USA factory under strict controls using proprietary processes. Shaft collars are RoHS2 and REACH compliant.</p>