Description Professional wood drill bit set Heat resistant up to 600°C. For drilling soft and hard sleeves, chipboard, hardboard, for dowel hole drilling. Technical data: drill type (categorization): wood twist drill bit set borehole diameter: 4 mm, 5 mm, 6 mm, 8 mm, 10 mm content: 1 set material (drill): HSS material suitability: wood tool holder (drill): straight shank box contents: wood drill bit diameter 4/5/6/8/10 mm