For 1/8; 3/16; 1/4; 5/16; 3/8; 7/16; 1/2; 5/8 & 3/4 O.D. Tubing. Includes 5 sawge adaptors which cover 3/16; 1/4; 5/16; 3/8; 1/2; 5/8; 3/4" in plastic box.