Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Survival Fixed blade knife Cudeman Spartan 126-MK with handle black micarta and blade of 16 cm, cover sheet Kydex
Product description: BLADE LENGTH: 16 cm HANDLE LENGTH: 14 cm OVERALL LENGTH: 30 cm BLADE THICKNESS: 5 mm BLADE WIDTH: 4 cm GRIND: HOLLOW GRIND BLADE FINISH: SATIN FINISH BLADE SHAPE: DROP-POINT STEEL: MOLYBDENUM VANADIUM HARDNESS: 54/56 HRc TANG TYPE: FULL-TANG ATTACH OF THE HANDLE: ALLEN STAINLESS STEEL SCREWS HANDLE MATERIAL: BLACK MICARTA WITH RED LINERS SHEATH: KYDEX (INCLUDED) BOX: INCLUDED BOX WEIGHT: 106 gr KNIFE WEIGHT: 384 gr SHEATH WEIGHT: 110 gr OVERALL WEIGHT: 600 gr EXTRAS: - HOLE FOR SAFETY CORD - FULLER ON THE BLADE - GLASS-BREAKER
Product feature: BLADE LENGTH: 16 cm with OVERALL LENGTH: 30 cm, STEEL: MOLYBDENUM VANADIUM with HARDNESS: 54/56 HRc, HANDLE MATERIAL: BLACK MICARTA WITH RED LINERS, OVERALL WEIGHT: 600 gr, SHEATH: KYDEX (INCLUDED)
Product price: $138.00
Product brand: Cudeman
Target attributes: Type
Answer: attribute: type
value: sheath
source: product description
attribute: type
value: sheath
source: product feature
attribute: type
value: full-tang
source: product description
attribute: type
value: fixed
source: product title