Here we have a Vintage 'Thin Barrel' Pocket Combination Multi Tool Kit with Corkscrew, Screwdriver, Screw Starter, & Awl, Made in GERMANY.  It is in Very Good clean 'used tool' condition. The 4 bits are 2-3/4" long.  Slotted end fits into slot on one end of barrel housing. Screwing on the other half locks the bit in place.  The closed barrel tool handle is 5/8" in diameter and 3-1/4" long.  Please review pics to confirm condition !