Syringe Material: Plastic + stainless steel Gavage Tubes Material: Stainless steel Syringe Capacity: 20ml or 50ml Gavage Tubes Size: (6 models) 18 G : (tubing length: approx. 50mm + 20mm Head diameter: approx. 3mm) curved for waxbills and other small birds 16 G : (tubing length: approx. 55mm + 25mm Head diameter: approx. 4.5mm) curved for Finches Canaries 14 G : (tubing length: approx. 65mm + 30mm Head diameter: approx. 4.5mm) curved for Cockatiels Budgerigars and small parkeets plus small raprs 12 G : (tubing length: approx. 75mm + 35mm Head diameter: approx. 4.5mm) curved for African Greys s and most Falcons 10 G : (tubing length: approx. 90mm + 40mm Head diameter: approx. 5.5mm) curved for Small Macaws and small cockaos 8 G : (tubing length: approx. 105mm + 50mm Head diameter: approx. 7mm) curved for Harris Hawks large Macaws and large Cockaos Applicable objects: parrots pigeons rodents etc. small pet Package included: 6 Pcs x Gavage Tubes( 8G 10G 12G 14G 16G 18G ) 1 Pcs x Syringe 2 Pcs x Stainless Steel Metal Feeding Spoon Note: Please allow 0-1cm errors due manual measurement. Item color displayed in phos may be showing slightly different on your computer monir since monirs are not calibrated same.