APPLICABLE DIAMETER OF DUST BOWL ADAPTER: This drill dust collector is applicable to connectors with 44mm, 39mm, 34mm and 29mm diameter. It's suitable for a variety of vacuum cleaners. SIMPLE TO USE: Being connected to vacuum cleaner, the dust extraction tool enables hands free fixing for simpler operation. CONVENIENT TO USE: This dust collector will largely simplify your drilling with less dusts, making your works safer and easier. USE WITH OTHER TOOL: The dust extraction tool can use with hole saw, drill and many other drilling tools, very stable and reliable. PREMIUM MATERIAL: This drill dust collector is made of high quality plastic and rubber materials, the dust collector has good toughness for long term uses., Manufacturer: Hilitand