Makita 4" 40V Cordless Slide Switch Brushless Angle Grinder  GA021GD201 Come With 2.5Ah battery and Charger | Model : M-GA021GD201

Features : 

• New toolless wheel cover allows for fast and easy angle adjustment and installation
• Auto-start Wireless System (AWS) connects to compatible vacuum cleaners with Bluetooth
• Active Feedback sensing Technology (AFT) turns the motor off if rotation speed suddenly slows or wheel is forced to stop
• Electric brake for maximum productivity

Specifications : 

• Wheel diameter : 100mm (4″)
• Hole Diameter : 16 mm (5/8”)
• No load speed (rpm) : 3,000 – 8,500
• Dimensions (L x W x H)w/ BL4025: 413x117x150 mm
• w/ BL4040: 425x117x162 mm
• Net weight2.8 – 3.4 kg (6.2 – 7.5 lbs.)