This is a mixed bundle of smaller sizes of fillers to use with kiln shelf props which are very helpful for adding just a little more height. There are: 6 x 1/2" fillers, 6 x 1" fillers, 6 x 1 1/4", and 9 x 1/4" fillers. n.b. the 1 1/4" consists of a 1/4" filler fused to a 1" tubular prop. n.b. The tubular props in photo 2 are for demonstration only and not included.