XM Fitness Performance Masse d'acier 35lbs

Purchased the 35LBS about a year ago, and it is a fantastic challenge. However, I need to inquire... why "The Fitness Factory" has not partnered with a supplier to bring a 30LBS on board?! 10lbs jumps with heavy clubs is absolutely brutal! If you folks can bring in a 30lbs availability, I would be grateful.
Back to the 35. This is serious weight for clubs! If you have playing around with them for years, and were smart about your jump in weight... this is fun. Start with 2 handed work. (at the beginning) I use it for strength training - 4 sets of 5, and work my sets up until 20 sets.
Have fun, but be careful.
P.S. starting outside in the beginning made me feel more confident. Didn't want to drop it through the floor.
Great product, reasonable price.