The Solar P1 Mag Loc Kit Off Adaptor enables swift assembly and disassembly of buzzer bar and bankstick set-ups. It is precision engineered in the UK and designed with a 3/8 BSF thread to fit with most alarms, back rests and similar accessories. - Precision engineered in the UK - Sure-fit, 5-spoke knurled locking collars for perfect alignment of alarms and back rests - Designed with 3/8 BSF thread to fit with most alarms, back rests etc