Blackdecker percussion hammer drills blackdecker kr504cresk this 500w corded drill from blackdecker is suitable for most diy drilling tasks the hammer action is suitable for drilling into masonry up to 13mm and non hammer drilling into wood up to 20mm whilst the spindle lock ensures easy bit change and maximum accessory gripthe kr504cresk has a high quality 13mm keyless chuck and variable speed for more control and a secondary handle provides additional comfort and grip on all job appli