Maglula's Aligning Insert is an add-on for the UpLULA and 22UpLULA loaders. It assist loading single-stack magazines by eliminating wiggling of the mag inside the loader. It connects to and is used with an existing loader. The 1911AI inserts is packed two in a blister and is useful with mags of width less than 14.5mm (0.57").
Specifications:

Caliber	Multiple
Capacity
Finish	Gray
Model
Material	Polymer
Type	Aligner Insert
Model Fit	1911
Brand Fit
Max Capacity