The 4.1/9.5 adapter has recently become popular as an alternative to the large bulkier 7/16. These parts have found their way into DAS systems. 4.1/9.5 adapters only require 89 in-lbs of torque, vs 225 in-lbs for 7/16 adapters. The 4.1/9.5 appears similar to the 4.3/10, but don't mate the 2 as damage will occur.
Please click on a subcategory from the dropdown menu above to find he exact 4.1/9.5 adapter you need.