It covers a lot of ground and I love it. If this thing keeps working consistently without failure. You can purchase the Velcro style backer here on amazon. I really don't know why it sands so poorly. Vibration is average for a sander in this class.
TCP Global TCP SA7310 Features & Specs
Professional Heavy Duty 6" Dual-Action Air Palm Sander with PSA Backing Pad
Heavy Duty Ball Bearing Construction for Vibration Free Performance
Professional Sander with Unique Ergonomic Design
Low Vibration for Swirl-Free Finishes
Built-in Regulator for Complete Speed Control
Editor's Impressions Of The TCP Global TCP SA7310
Tool Motor Power
Random Sanding Action
Value For Money
TCP Global TCP SA7310 Final Thoughts
"What a difference!"
You will need Teflon tape to complete assembly. Big hunk of Had a issue with the head coming off. I read all the reviews and bought this one. I will use this sander until it stop working. 4 stars because it doesn't hook to my shop vac.