Roller Material 
Silica gel
Handle Material
Wood
Tester material
Steel
Size
220*60*35mm
Specification: Roller material: Silica gel,
Handle material: Wood,
Tester material: Steel,
Size: 220*60*35mm
Application: Membrane welding and check the false or missing welding of the welding seam for the waterproof layer, such as PVC/TPO coil welding seam, EPDM bonding seams, etc.