Maybe one of these similar products would be of interest:-

Titan Fitness Iron Weights for Weighted Vest, Set of Four 2.5 LB Cast Iron Ingots for Elite Series Adjustable Weight Vest, Cardio & Strength Training Equipment

Titan Fitness 30 LB Cast Iron Kettlebell, Single Piece Casting, LB Markings

Titan Fitness 100 LB Cast Iron Kettlebell, Single Piece Casting, LB Markings, Fu

Titan Fitness 20 LB Cast Iron Kettlebell, Single Piece Casting, LB Markings

Titan Fitness 80 LB Cast Iron Kettlebell, Single Piece Casting, LB Markings