Sterling Silver 925 Lobster Clasp with End Caps 4 Sets, 2.6x34mm Lobster Claw with 2mm ID End Tubes Sterling Silver Lobster clasp with end caps 4 Sets 2.6x34mm Lobster Claw with 2mm ID End Tubes 2mm ID End Tubes End tubes will take a 2mm cord or chain, just glue or crimp in place