Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Maxcraft 60607 8-in-1 Screwdriver Set
Product description: Easy in and out 8-in-1 quick-change bit design. Rugged chrome vanadium steel bit shafts. Complete with organizer storage case. 3-Piece screwdriver bits (flat): 3mm, 5mm, and 6mm and 3-piece screwdriver bits. 1-Piece tack puller and 1-piece scratch awl.
Product feature: Easy In/Out 8-in-1 Quick Change Bit Design, Rugged Chrome Vanadium Steel Bit Shafts, Complete with Organizer Storage Case, Lifetime Guarantee
Product price: $9.95
Product brand: MAXCRAFT
Target attributes: Voltage
Answer: attribute: voltage
value: None
source: None