• Manufactured from special alloy steel and heat treated for optimum strength and durability
• Nickel-chrome plating helps protect against corrosion and makes it easy to wipe clean
• Unique spline wrenching configuration also allows for use on ordinary 6 and 12 point fasteners with an advantage similar to the Snap-on® Flank Drive® wrenching system
| # | Inches | Stock No. | A | B | C | D | E |
| #16 | 1/2 | SES161B | 23/32 | 55/64 | 5/8 | 1-19/64 | 29/64 |
| #18 | 9/16 | SES181B | 53/64 | 55/64 | 5/8 | 1-19/64 | 15/32 |
| #20 | 5/8 | SES201B | 29/32 | 29/32 | 7/8 | 1-17/32 | 17/32 |
| #22 | 11/16 | SES221B | 31/32 | 31/32 | 7/8 | 1-17/32 | 9/16 |
| #24 | 3/4 | SES241B | 1-1/16 | 31/32 | 13/16 | 1-17/32 | 9/16 |
| #26 | 13/16 | SES261B | 1-1/8 | 1-1/16 | 25/32 | 1-17/32 | 9/16 |
| #28 | 13/16 | SES281B | 1-3/16 | 1-1/8 | 25/32 | 1-17/32 | 9/16 |
| #30 | 15/16 | SES301B | 1-9/32 | 1-7/32 | 25/32 | 1-17/32 | 9/16 |