Yup they sure do but as much fun as they are to play with I still depend on feel at impact. I really like to beable to feel the club kick and I get that better with an Accra then with other shafts. The launch monitor will gve you some cool data but it isn't the be all end all. I would still use it to get fitted with a driver but go out after wards and test iit out doors, something I didn't do with my own.