Dave pelz's sweet spot putting slips are a set of three clips that includes one of each difficulty level: standard, Pro and super-pro. Putting clips are small aluminum clips with prongs on either end that attach to any flat faced PUTTER with double sided tape. They are designed to promote a "pure-strike", with sweet-spot impact and PUTTER face square to the intended line. Improve your putting impact pattern and make more putts than ever before. Provides immediate feedback on the precision of your PUTTER impact relative to the sweet spot.