Sizes Coupling Polarization Contact Spacing Contact Termination - Five shell sizes: E, A, B, C, and D - Friction or jackscrew - Keystone-shaped shells - .075 (1.91) - Cri.

2DD100S

2DD1621T

2DD1664P

2DD1664Q

2DD1664R

2DD1766P

2DD1766Q

2DD1766R

2DD2098R

2DD2150R

2DD2652

2DD2656

2DD2661