Zevro&reg; Stainless Steel Knuckle Jigger&trade; The entertaining Zevro Stainless Steel Knuckle Jigger is a new spin on the classic bar tool. The easy to hold center ring offers you the convenience and speed of three jiggers all in one tool. For accuracy and ease, just spin and pour to maker those multiple ingredient beverages. Ideal for any bar, restaurant, or home!!! Sold Seperately.