#17 Standard Head - NEM - 362 #17 Plastic Short - 7.11mm (9/32") 2 Pair Snap-in Couplers for European Equipment, with (#622)Coil Knuckle Springs & (#620) Centering Spring. For use...

#18 Standard Head - NEM - 362 #18  #18 Plastic Medium - 8.63mm (11/32") 2 Pair Snap-in Couplers for European Equipment, with (#622)Coil Knuckle Springs & (#620) Centering Spring....

#19 Standard Head - NEM - 362 #19 -Long - 10.61mm (27/64") 2 Pair Snap-in Couplers for European Equipment, with (#622)Coil Knuckle Springs & (#620) Centering Spring. For use with...

#20 Standard Head - NEM - 362 #20 Plastic - Extra Long - 11.68mm (29/64") 2 Pair Snap-in Couplers for European Equipment, with (#622)Coil Knuckle Springs & (#620) Centering Spring....

2 Pair of Couplers , Offset Plastic Coupler with metal Knuckles, (#622) Coil Knuckle Springs & (#634) Bonze Centring Springs. long (25/64") Underset with 213 & 232 Gearbox.

2 Pair of Couplers , Offset Plastic Coupler with metal Knuckles, (#622) Coil Knuckle Springs & (#634) Bonze Centring Springs. long (9/32") Overset with 213 & 232 Gearbox.

2 Pair of Couplers , Offset Plastic Coupler with metal Knuckles, (#622) Coil Knuckle Springs & (#634) Bonze Centring Springs. Short (1/4") centerset shank with 213 & 232 Gearbox.

2 Pair of Couplers , Offset Plastic Coupler with metal Knuckles, (#622) Coil Knuckle Springs & (#634) Bonze Centring Springs. Short (1/4") Underset with 213 & 232 Gearbox.  

2 Pair of Couplers , Offset Plastic Coupler with metal Knuckles, (#622) Coil Knuckle Springs & (#634) Bonze Centring Springs. Short (1/4") Overset with 213 & 232 Gearbox.Shank