"Really happy with these bits - they work very well in all the wall surfaces I have used them on so far. And I use an Erbauer cordless drill for most of my work ( http://www.screwfix.com/p/erbauer-erf437sds-4kg-sds-plus-drill-24v/28292 ) which also works great and is great value."
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Review 7 for Erbauer SDS Drill Bit Set 10 Piece Set
"So far the SDS Drill set has done the job the bits are good quality and for £18.74 they will do the job I have to do with them. The down side is the box they come in, Its very flimsy it should say tin foil lol the one I got was crushed in the middle and no end of trying to reshape it has worked (it looked like it had been stood on) hey ho like I said for £18 74. The overall rating is because of the box, the bits are worth the money."