SPOTCHECK® SK Kit, SK 816 ORS NASCO medium and large cylinders Deluxe Models medium and large cylinders Deluxe Models have refinements and features such as handle bars with hand grips for better control and stability when moving the loaded unit has a nice thick edge for easier more accurate marking and helps keep your soapstone from slipping 36" tape measure printed on the medium & large Wizard limits the need for an extra tape measure Circumference & Quartering scale printed on every wrap limits the need for calculation Packaged in a durable Convenient collection of Magnaflux dye penetrant testing consumable products in easy to use aerosol form for Type 2 penetrant non destructive testing Each penetrant testing kit comes with SKL SP2 solvent removable penetrant and SKC S remover Portable and great for job sites or field inspections to check welds