This is a firmer alternative to the Grid Stick.  

This stick foam roller is firmer than other models, perfect for digging deep.  

The GRID STK® X Foam Roller, an extra-firm, multi-functional handheld massage tool, can be used seated or standing to roll, release, and relieve minor aches and pains. 

The AcuGRIP® handles allow user-controlled pressure for a comfortable massage, and can be used to anchor on tight spots for acupressure relief.