The CRKT No Time Off is a very solid heavy-duty knife, designed by Brazilian knife maker Flavio Ikoma. A knife for tough jobs! The blade width of 3,8 mm is on the thick side for a pocket knife of this size. The blade is in the open position blocked by a liner-lock. The new ILS system: Ikoma Lock System. This is a small spring-mounted lever on the liner-lock which prevents unintentionally unlocking the liner. Opening this pocket knife is easy with flipper and the IKBS ball-bearing system.