Small hand drills are easy to use but need to be of high quality and precise to be satisfactory. That's why we have gone to Germany for these. Both are 3-jaw single pinion drills made of steel (with wood handles and alloy driving wheel). The Mini Drill (weighs 9-1/2 oz.) is only 9" long with a 6mm chuck (bit shanks need to be less than 1/4"). The Large Drill (weighs 20 oz.) is 12" long with a 10mm chuck (will handle bits up to 3/8" shanks). Although the Large Drill will theoretically "do it all", there will be times you will find the smaller drill an absolute delight to use - so we really recommend it to you also.