Jackson Safety Curv-O-Mark Radius Marker for Pipes - Welding Marking Tool - Medium Size - Up to 24" in RadiusPOCKET SIZE: The Jackson Safety Radius Marker has a folding design, so can you conveniently fit it into your clothing pocket or tool beltCIRCLE SCRIBER: The Radius Marker is designed to scribe circles up to 48" (a 24" radius) and features sturdy friction joints to help maintain its rigidity and accuracy.DURABLE ALUMINUM: Made of lightweight, rust-free, durable aluminum for long-lasting useCRAYON INCLUDED: One soapstone crayon comes installed with the marker, and the scribe holder will also accept a round, square, or flat soapstone crayon, pencil or steel point scribeSTANDARD SIZE: Comes as a Pack of 1 Standard Sized Radius Marking Tool. This model is also available in Mini, Small, and Jumbo sizes and as a Pack of 2