Description:The electric drill dust cover features with high elasticity, strong toughness, free expansion.Electric drill dustproof cover has good dust-proof effect, is durable, non-toxic, and odorless.Made of high quality silicone, it's environmentally friendly and durable.The style A black total length is 9.2cm, inner diameter is 6.6cm, outer diameter is 8.8cm, inner hole is 1.2cm. Style A white total length is 9.4cm, inner diameter is 6.6cm, outer diameter is 8.8cm, inner hole is 1.2cm. The style B white total length is 9.5cm, inner diameter is 4.9cm, outer diameter is 8.7cm, inner hole is 1.2cm. Style C white totaIt's very suitable for electric hammer, impact drill, electric hand drill, suitable for engineering installation, air conditioning installation, wall drilling, etc.Item Name: Dustproof CoverMaterial:Rubber,SiliconeStyle: ModernType: StandardSize:1: 9.2cmx8.8cmx8.8cm/3.62inx3.46inx3.46in2: 9.4cmx8.8cmx8.8cm/3.7inx3.46inx3.46in3: 9.5cmx8.7cmx8.7cm/3.74inx3.43inx3.43in4: 12.2cmx9.2cmx9.2cm/4.8inx3.62inx3.62inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Dustproof Cover1 X Silicone Pad