The Magnetic Torch Guide is a 24” stainless steel straight edge rail that comes with two (2) strong, heat resistant, adjustable, magnetic blocks that can be positioned to accommodate any cutting job. The 24? Extension #23040-24 comes complete with one (1) magnetic connecting block and a 24? cutting rail. The connecting blocks are slotted on three (3) sides giving them the capability to fasten to your cutting rail in whatever position your job requires The ON/OFF switch makes setting up easy and keeps free from debris.