Ample quantity: you will receive 4 pieces of soap stone and holders in round and square shape, 2 for each, and 12 pieces of soap stone refills in round and square, 6 pieces for each, a total of 16 pieces, sufficient quantity and shapes satisfy your needs, allowing you to handle work easily Aluminum holder and natural soapstone: the soapstone holder is made of only aluminum, sturdy, stable for multiple uses, as long as the holder is intact, you can change the refill repeatedly; The soap stones pencil is made of natural stone, resistant to high temperatures, waterproof, will not burn off during welding, the mark will not pollute the weld and is easy to remove Comfortable grip: the diameter of the round soapstone refill is 1/4 inch, the size of the flat refill is 3/16 x 1/2 inch, the length of both is 5 inch, suitable size makes welding chalk convenient to grip and offers a long-term service; The thin soapstone holder in pen shape is easy to carry and store, and the textured tightening collar ensures that the pen is held firmly and is easy to mark even when wearing gloves Simple to replace: the replacement refill is easy to put into the pen holder, the tightened end ring always firmly fixes the refill, you can also use pliers to tighten it; The welding soap stone holder has a grooved box design and a spring pocket clip for easy indexing and stable operating, and it can be easily operated with one hand Extensive usages: welding equipment and tools can write smoothly and make clear marks, suitable for welding, metal manufacturing, construction, machinery manufacturing, vehicle manufacturing, ships, steel, etc., to improve your work efficiency colour: silver Material: aluminum + natural stone Package Contents: 1 set x soap stones chalk pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.