Will this three-piece set fit my 10 in 1 handle

If by 10-in-1 handle you are referring to Klein Tools Cat. No. 32477 10-in-1 Multi-Bit Screwdriver / Nut Driver, then, no, the Cat. No. 65411PK3 3-Piece Magnetic Power Nut Setter Set will not fit. However, they will work with many of our other multi-bit driver handles, such as Cat. No. 32303 14-in-1 Multi-Bit Adjustable Length Screwdriver, Cat. No. 32516HD KNECT™ 16-in-1 Impact Rated Hybrid Screwdriver / Nut Driver, and Cat. No. 32500HD 11-in-1 Impact Rated Multi-Bit Screwdriver / Nut Driver. Please note, though, that these PNDs cannot store in the multi-bit handles, as they are far too long.