Panel Lockout – Push Button Adjustable Fits 27~32mm diameter push buttons and round switch knobs. Dimensions: Cover size: 62mm Dia x 54mm H. Fits 27 ~ 32mm. Hole diameter push buttons. ● Stainless steel teeth chassis is applied together with transparent fiber glass plastic base to provide firm gripping and locking. Removable Device. Non-permanent. Ideal for locking push buttons where the base cannot be removed.