Ridgid 19366 758 Replacement Loop for 141 and 161 Geared Threader Machines This item is LOOP, 758 F/141 19366 This product is used for tools-replacement-parts This product manufacture by United States Replaceable part Replaceable accessory Accessory and part for the 141 geared threader machines Accessory and part for the 161 geared threader machines Allows power drives and threading machines to thread up to 4-inches and 6-inches pipe