Bosch sds quick concrete drill bits for bosch uneo bosch 2609256903 p bosch are one of the leading names when it comes to power tools and accessories including their high quality sds quick concrete drill bits p p the power transmission functions in sds quick system come via a form closure in conventional cylinder shaft via a friction grip while the connection between drills and jaws in the cylinder shaft system is based on friction p p the power transmission is positively secured b