Flexitime Cartridge Bulk Pk Heavy 50mL 6/2Pk/Bx by Kulzer SKU 959-1318AA 123 $321.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Flexitime Heavy Tray Impression Material Bulk Pack: 12 - 50 mL cartridges and 36 MIXPAC mixing tips. A-Silicone VPS Precision Impression Material.